Which of the following elements are in the same group as silicon (Si)?
A) C
B) P
C) As
D) B
E) none of the above
Answer: A
You might also like to view...
A 30. kg child stands at one end of a floating 20. kg canoe that is 10. ft long. The child walks to the other end of the canoe. How far does the canoe move in the water assuming water friction is negligible?
A) 10. ft B) 4.0 ft C) 6.0 ft D) 8.0 ft E) 2.0 ft
A planet has two small satellites in circular orbits around the planet. The first satellite has a period 12.0 hours and an orbital radius 6.00 × 107 m. The second planet has a period 16.0 hours
What is the orbital radius of the second satellite? A) 4.50 × 107 B) 3.90 × 107 C) 9.24 × 107 D) 8.00 × 107 E) 7.27 × 107
Two particles, each having a mass of 3.0 ?g and having equal but opposite charges of magnitude of 6.0 nC, are released simultaneously from rest when they are a very large distance apart. What distance separates the two at the instant when each has a speed of 5.0 m/s?
a. 4.3 mm b. 8.6 mm c. 7.3 mm d. 5.6 mm e. 2.2 mm
The ultraviolet catastrophe is a catastrophe because
A) human vision cannot detect ultraviolet light directly. B) Wien's law predicts an infinite intensity of radiation at small wavelengths. C) Wien's law predicts an infinite intensity of radiation at large wavelengths. D) ultraviolet light will not produce electrons by the photoelectric effect.